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Unix Timestamp Converter
Convert a Unix timestamp to a readable date and back. Auto-detects seconds or milliseconds. Runs entirely in your browser.
Timestamp → date
Date → timestamp
A Unix timestamp is just the number of seconds since 1 January 1970 (UTC). Everything here is worked out in your browser, nothing is uploaded.
A Unix timestamp is a way computers store a date and time, the number of seconds since 1 January 1970. This tool turns that number into a readable date, and turns a date back into the number.
How to use
- To read a timestamp: paste the number and tap Convert to date.
- To get a timestamp: type a date and time and tap Convert to timestamp.
- The current timestamp is always shown at the top.
Frequently asked questions
Seconds or milliseconds?
Both are common. The tool auto-detects which one you pasted (13-digit numbers are treated as milliseconds) and tells you what it used.
Which timezone does it show?
It shows both UTC (the global standard) and your own local time, so you can use whichever you need.
Is my data sent anywhere?
No, the conversion runs entirely in your browser.